document.write( "Question 958703: A triangle has an angle of 0.75 rads, and an opposite side of 47 meters. Find the lengths of the remaining side if possible. \n" ); document.write( "
Algebra.Com's Answer #585917 by Theo(13342)![]() ![]() You can put this solution on YOUR website! one angle and the opposite side is not enough to get a particular triangle.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you need at least 2 angles and 1 side opposite one of the angles.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "then you can use the law of sines to find the length of the other sides.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you need at least 2 sides and 1 angle between them.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "then you can use the law of cosines to find the third side and the other angles.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the attached diagram shows at least 3 triangles that have the same angle with the same length of side opposite it.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "there are many others.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " ![]() \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you would use the law of sines with these triangles to find the other angles and the length of the other sides.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the law of sines is:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a/sin(A) = b/sin(B) = c/sin(C).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a is the side opposite angle A. \n" ); document.write( "b is the side opposite angle B. \n" ); document.write( "c is the side opposite angle C.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "With 2 angles and the side opposite one of them, you can find the other two angles and the length of the other two sides easily.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "In the middle diagram, where the points of the triangle are labeled:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "side a would be side BC which is opposite angle A. \n" ); document.write( "side b would be side AC which is opposite angle B. \n" ); document.write( "side c would be side AB which is opposite angle C.\r \n" ); document.write( "\n" ); document.write( "if you have the length of 2 sides and the measure of the angle between them, you can use the law of cosines.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the law of cosines is:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "c^2 = a^2 + b^2 - 2 * a * b * cos(C). \n" ); document.write( " \n" ); document.write( " |